KR960706605A - A FUEL INJECTOR FOR A LARGE TWO-STROKE INTERNAL COMBUSTION ENGINE - Google Patents

A FUEL INJECTOR FOR A LARGE TWO-STROKE INTERNAL COMBUSTION ENGINE

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Publication number
KR960706605A
KR960706605A KR1019960703079A KR19960703079A KR960706605A KR 960706605 A KR960706605 A KR 960706605A KR 1019960703079 A KR1019960703079 A KR 1019960703079A KR 19960703079 A KR19960703079 A KR 19960703079A KR 960706605 A KR960706605 A KR 960706605A
Authority
KR
South Korea
Prior art keywords
fuel injector
valve
slide
nozzle
bore
Prior art date
Application number
KR1019960703079A
Other languages
Korean (ko)
Other versions
KR100335666B1 (en
Inventor
포울 에릭 라슨
Original Assignee
한센 존 스텐달
엠에이엔 비 앤드 떠블유 디젤 에이/에스
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Publication of KR960706605A publication Critical patent/KR960706605A/en
Application granted granted Critical
Publication of KR100335666B1 publication Critical patent/KR100335666B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/188—Spherical or partly spherical shaped valve member ends
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/04—Injectors with heating, cooling, or thermally-insulating means
    • F02M53/043—Injectors with heating, cooling, or thermally-insulating means with cooling means other than air cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/042—The valves being provided with fuel passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/166—Selection of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Nozzles (AREA)

Abstract

대형 2 행정 내연 기관용 연료 인젝터(1)는 수냉 실린더 커버(51)내에 장착되는 신장된 외측 하우징(2)을 가진다. 연료 인젝터 개폐용 주 밸브 시이트(18)는 상부의 냉각된 밸브 부분(la)에 위치하는 반면에, 노즐 구멍(24)에 대한 연료 유동을 위한 제2의 폐쇄 부재(32)는 냉각되지 아니한 밸브 부분(1b)내에 있는 노즐(4)내에 위치한다. 노즐 보어는 노즐 구멍을 가진 하부 보어 부분(29)보다 큰 직경을 가진 상부 보어 부분(22)을 포함한다. 밸브 슬라이드(15)가 폐쇄 위치에 있을때, 제2의 폐쇄 부재는 테이퍼진 직경을 가진 영역(23)에 위치한다. 한편으로는 밸브가 폐쇄되었을때 폐쇄 부재가 노즐 보어내에 있는 대부분의 연료 체적을 노즐 구멍으로부터 차단하며, 다른 한편으로는, 밸브 슬라이드가 노즐 구멍으로부터 거리를 두어 종료됨으로써 슬라이드의 하부부분(30)은 인젝터가 개방되었을때 미립화를 교란하지 아니한다.The fuel injector 1 for the large two-stroke internal combustion engine has an elongated outer housing 2 mounted in the water-cooled cylinder cover 51. The fuel injector opening and closing main valve seat 18 is located in the upper cooled valve portion la, while the second closing member 32 for fuel flow to the nozzle hole 24 is an uncooled valve. It is located in the nozzle 4 in the part 1b. The nozzle bore includes an upper bore portion 22 having a larger diameter than the lower bore portion 29 having a nozzle hole. When the valve slide 15 is in the closed position, the second closing member is located in the region 23 with the tapered diameter. On the one hand, the closing member blocks most of the fuel volume in the nozzle bore from the nozzle bore when the valve is closed, and on the other hand, the valve slide ends at a distance from the nozzle bore so that the lower portion 30 of the slide It does not disturb atomization when the injector is opened.

Description

대형 2 행정 내연 기관용 연료 인젝터 (A FUEL INJECTOR FOR A LARGE TWOSTROKE INTERNAL COMBUSTION ENGINE)A FUEL INJECTOR FOR A LARGE TWOSTROKE INTERNAL COMBUSTION ENGINE

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 연료 인젝터의 제1실시예의길이 방향의 단면도, 제2도 및 제3도는 인젝터의 제2실시예에 대한 개방 및 페쇄 위치에서의 하부 부분에 대한 확대 단면도.1 is a cross-sectional view in the length direction of a first embodiment of a fuel injector, and FIGS. 2 and 3 are enlarged cross-sectional views of a lower portion in open and closed positions for a second embodiment of the injector.

Claims (10)

밸브(1)는 상부의 냉각된 밸브 부분(1a)과, 중앙의 길이 방향 노즐 보어로부터 연장된 횡방향 노즐 구멍(24)을 가진 최소한 연료 노즐(4)의 하부 부분을 포함하는 하부의 냉각되지 아니한 밸브 부분(1b)을 가지는 방식으로 수냉 실린더 커버(51)에 장착되는 신장된 외측 하우징(33)을 가지고, 밸브 슬라이드(15)는 연료 인젝터를 개폐하도록 냉각된 밸브 부분내에 위치한 주 밸브 시이트(18)용의 가동 밸브 부분(28)을 지지하는 상부 부분과, 노즐 보어(22,23,29)내로 연장되고 노즐 구멍으로의 연료 유동을 위한 제2폐쇄 부재를 지지하며 하부 밸브 부분내에 위치한 얇은 하부 부분(30)을 가지는, 선박 추진용의 디이젤 엔진과 같은 대형 2 행정 내연 기관용 연료 인젝터(1)에 있어서, 노즐 보어는 하부 밸브 부분(1b)내에 위치한 하향으로 감소하는 직경을 가진 영역(24)을 가지며, 노즐 구멍(24)은 보다 작은 직경을 가진 보어 부분(29)으로부터 연장되고, 밸브 슬라이드의 하부 부분(30)은 상부 노즐 구멍 위의 높이에서 끝나고, 제2의 폐쇄 부재(32,58,59)는 슬라이드(15)가 폐쇄 위치에 있을때 보어의 감소하는 직경에 대한 영역(23)에 위치하는 것을 특징으로 하는 대형 2 행정 내연 기관용 연료 인젝터(1).The valve 1 is not cooled at the bottom, including at least the lower portion of the fuel nozzle 4 with the cooled valve portion 1a at the top and the lateral nozzle holes 24 extending from the central longitudinal nozzle bore. With an elongated outer housing 33 mounted to the water-cooled cylinder cover 51 in a manner with no valve portion 1b, the valve slide 15 has a main valve seat located within the cooled valve portion to open and close the fuel injector. 18, an upper portion supporting the movable valve portion 28, and a thinner portion located in the lower valve portion, which extends into the nozzle bores 22, 23, 29 and supports a second closure member for fuel flow to the nozzle aperture. In a fuel injector 1 for a large two-stroke internal combustion engine, such as a diesel engine for ship propulsion, having a lower portion 30, the nozzle bore is a region 24 having a downwardly decreasing diameter located within the lower valve portion 1b. ) The nozzle hole 24 extends from the bore portion 29 having a smaller diameter, the lower portion 30 of the valve slide ends at a height above the upper nozzle hole, and the second closure members 32, 58, 59 is a fuel injector 1 for a large two-stroke internal combustion engine, characterized in that it is located in the region 23 for the decreasing diameter of the bore when the slide 15 is in the closed position. 제1항에 있어서, 제2폐쇄 부재(32)는 보다 작은 직경을 가지는 노즐 보어의 부분(29)내로 시일되게 미끌어질 수 있는 실린더형 부분을 가지는 것을 특징으로 하는 연료 인젝터.2. The fuel injector according to claim 1, wherein the second closure member (32) has a cylindrical portion that can be sealed to slide into a portion (29) of the nozzle bore having a smaller diameter. 제1항 또는 제2항에 있어서, 제2폐쇄부재를 가지는 밸브 슬라이드의얇은 하부 부분(30)은 상부 부분의 단단한 연장부인 것을 특징으로 하는 연료 인젝터.3. The fuel injector of claim 1 or 2, wherein the thin lower portion (30) of the valve slide with the second closure member is a rigid extension of the upper portion. 제1항 또는 제2항에 있어서, 밸브 슬라이드의 얇은 하부 부분(30)은 상부 부분의 횡방향으로 유연한 연장부이며, 제2폐쇄 부재(32) 상부의 높이에서, 하부 부분은 가이드(42)를 가지며, 이것은 보다 큰 직경을 가지는 보어의 일 부분(22)의 벽에 대하여 접함으로써 폐쇄 부재를 노즐 보어내에 중심을 맞추게 하는 것을 특징으로 하는 연료 인젝터.3. The thin lower portion 30 of the valve slide is a transversely flexible extension of the upper portion, and at a height above the second closure member 32, the lower portion is a guide 42. A fuel injector characterized in that the closing member is centered in the nozzle bore by contacting the wall of the portion (22) of the bore having a larger diameter. 제4항에 있어서, 가이드(42)는 슬라이드의 하부 부분(30) 상에 몇개의 반경상으로 연장된 길이 방향의 핀을 가지며, 핀의 상부 및 하부 단부는 뾰족하게 되는 것을 특징으로 하는 연료 인젝터.5. The fuel injector of claim 4, wherein the guide 42 has several radially extending longitudinally fins on the lower portion 30 of the slide, the upper and lower ends of which are pointed. . 제1항에 있어서, 폐쇄 위치에서, 제2폐쇄 부재(58,59)는 감소하는 직경을 가진 보어의 영역(23)내에 있는 경사 표면(57)에 접하고, 상기 폐쇄 부재는 슬라이드의 길이 방향에서 이격 가능하며 슬라이드(15)의 상부로부터 이탈되는 운동에 대하여 스프링의 하중을 받는 것을 특징으로 하는 연료 인젝터.The method of claim 1, wherein in the closed position, the second closure members 58, 59 abut the inclined surface 57 in the region 23 of the bore with decreasing diameter, the closure member in the longitudinal direction of the slide. A fuel injector, characterized in that it is spaced apart and subjected to a load of a spring for a movement away from the top of the slide (15). 전기한 항들중 어느 한 항에 있어서, 제2폐쇄 부재(32,58,59)를 가지는 밸브 슬라이드의 하부의 얇은 부분(30)은 분리된 유니트이며, 이것은 상부 부분에 제거 가능하게 고정되는 것을 특징으로 하는 연료 인젝터.The lower portion 30 of the valve slide having the second closure members 32, 58, 59 is a separate unit, which is removably fixed to the upper portion. Fuel injector. 전기한 항들중 어느 한 항에 있어서, 감소하는 직경을 가진 노즐 보어의 영역(23)은 주 밸브 시이트 (18)보다 노즐 구멍(24)에 근접한 것을 특징으로 하는 연료 인젝터.Fuel injector according to any of the preceding claims, characterized in that the area (23) of the nozzle bore with decreasing diameter is closer to the nozzle hole (24) than the main valve seat (18). 전기한 항들중 어느 한 항에 있어서, 슬라이드의 가동 밸브 부분(28)이 주 밸브 시이트(18)로부터 이탈되는 소정 거리로 이동하였을때 제2폐쇄 부재는 작은 직경을 가지는 노즐 보어의 부분(29)을 개방만 하는 것을 특징으로 하는 연료 인젝터.The part 29 of the nozzle bore according to any one of the preceding claims, wherein the second closing member has a small diameter when the movable valve portion 28 of the slide moves a predetermined distance away from the main valve seat 18. Fuel injector, characterized in that only opening. 전기한 항들중 어느 한 항에 있어서, 슬라이드의 하부 자유 단부(44,58)가 원추형인 것을 특징으로 하는 연료 인젝터.Fuel injector according to any one of the preceding claims, characterized in that the lower free end (44,58) of the slide is conical. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019960703079A 1994-02-07 1995-02-06 A fuel injector for a large two - stroke internal combustion engine KR100335666B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK015694A DK171975B1 (en) 1994-02-07 1994-02-07 Fuel injector for a large two-stroke internal combustion engine
DK0156/94 1994-02-07
PCT/DK1995/000053 WO1995021324A1 (en) 1994-02-07 1995-02-06 A fuel injector for a large two-stroke internal combustion engine

Publications (2)

Publication Number Publication Date
KR960706605A true KR960706605A (en) 1996-12-09
KR100335666B1 KR100335666B1 (en) 2002-11-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960703079A KR100335666B1 (en) 1994-02-07 1995-02-06 A fuel injector for a large two - stroke internal combustion engine

Country Status (10)

Country Link
EP (1) EP0744007B1 (en)
JP (1) JP3081646B2 (en)
KR (1) KR100335666B1 (en)
CN (1) CN1057366C (en)
DE (1) DE69500921T2 (en)
DK (1) DK171975B1 (en)
ES (1) ES2109094T3 (en)
HR (1) HRP950053B1 (en)
PL (1) PL175740B1 (en)
WO (1) WO1995021324A1 (en)

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WO2000006891A1 (en) * 1998-07-24 2000-02-10 Man B & W Diesel A/S A fuel valve for an internal combustion engine
DE10019153A1 (en) * 2000-04-18 2001-10-25 Bosch Gmbh Robert Fuel injection valve for IC engines has valve bore with valve member and valve piston loaded by hydraulic closing force to engage on valve member
DE10129308C1 (en) * 2001-06-18 2002-11-28 Man B & W Diesel As Kopenhagen Fuel feed device for 2-stroke diesel engine used for e.g., for a ships drive, has at least one valve closure of fuel injection valves for each engine cylinder de-activated at partial load by associated control piston
KR20060030116A (en) * 2003-07-17 2006-04-07 간제르-히드로막 아게 Fuel injection valve for internal combustion engines
JP2005315101A (en) * 2004-04-27 2005-11-10 Isuzu Motors Ltd Gas fuel injection valve
CN100351512C (en) * 2004-07-15 2007-11-28 于魁江 Electric control oil atomizer
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KR100335666B1 (en) 2002-11-23
DE69500921D1 (en) 1997-11-27
CN1140483A (en) 1997-01-15
DK15694A (en) 1995-08-08
HRP950053A2 (en) 1997-02-28
HRP950053B1 (en) 1998-12-31
PL175740B1 (en) 1999-02-26
PL315808A1 (en) 1996-12-09
DK171975B1 (en) 1997-09-01
JPH09508456A (en) 1997-08-26
WO1995021324A1 (en) 1995-08-10
ES2109094T3 (en) 1998-01-01
EP0744007B1 (en) 1997-10-22
DE69500921T2 (en) 1998-03-12
CN1057366C (en) 2000-10-11
EP0744007A1 (en) 1996-11-27
JP3081646B2 (en) 2000-08-28

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